The best days to cut fresh tracks- bluebird, cold, and still. The actual days you’ll head out to cut fresh tracks- all and any. For those with an insatiable appetite for snow, the Igneo Shell Jacket™ bridges the gap between crystal conditions and furious snowstorms. Pertex® Shield fabric seals out raging blizzards, and double-sliding pit zips keep you from overheating on your third lap of your favorite powder stash.